AT160360B - Process for the manufacture of high vacuum discharge tubes. - Google Patents

Process for the manufacture of high vacuum discharge tubes.

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Publication number
AT160360B
AT160360B AT160360DA AT160360B AT 160360 B AT160360 B AT 160360B AT 160360D A AT160360D A AT 160360DA AT 160360 B AT160360 B AT 160360B
Authority
AT
Austria
Prior art keywords
manufacture
high vacuum
discharge tubes
alkaline earth
vacuum discharge
Prior art date
Application number
Other languages
German (de)
Original Assignee
Philips Patentverwaltung
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication date
Application granted granted Critical
Publication of AT160360B publication Critical patent/AT160360B/en

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Description

  

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  Verfahren zur Herstellung von Hochvakuumentladungsröhren. 
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   Nach dem erfindungsgemässen Verfahren hergestellte Fangstoffbeläge weisen insbesondere bezüglich ihrer gasbindenden Wirkung während des Betriebes der Röhre noch bessere Eigenschaften auf als Fangstoffbeläge, welche durch eine Edelgasatmosphäre hindurch verdampft wurden. 



   Ob das erfindungsgemässe Verfahren angewendet wurde, lässt sich an fertigen Röhren auf folgende Weise überprüfen :
Man lässt in die Röhre eine gewisse Menge   Queeksilberdampf   ein. Das Quecksilber amalgamiert sich mit dem Aktivmetall des   Fangstoffbelags, wodurch   die festgehaltenen Gase wieder frei werden und abgepumpt werden können. Durch Wägung und Analyse dieser Gase kann man nun feststellen, auf welche Weise die Getterschichte aufgetragen wurde. 



   PATENT-ANSPRÜCHE :
1. Verfahren zur Herstellung einer hochevakuierten   Entladul1gsröhre,   bei dem ein gasbindender Stoff durch eine Gasatmosphäre hindurch verdampft wird, welche in der bereits abgeschmolzenen Röhre selbst entwickelt wird, dadurch gekennzeichnet, dass die Gasatmosphäre von dem verdampften gasbindenden Stoff gebunden wird.



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  Process for the manufacture of high vacuum discharge tubes.
 EMI1.1
 

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   Catching material coverings produced according to the method according to the invention have even better properties with regard to their gas-binding effect during operation of the tube than catching material coverings which have been evaporated through a noble gas atmosphere.



   Whether the method according to the invention has been used can be checked on finished tubes in the following way:
A certain amount of queek silver vapor is let into the tube. The mercury is amalgamated with the active metal of the trapping material, so that the captured gases are released again and can be pumped out. By weighing and analyzing these gases you can now determine how the getter layer was applied.



   PATENT CLAIMS:
1. A method for producing a highly evacuated discharge tube in which a gas-binding substance is evaporated through a gas atmosphere which is developed in the already melted tube itself, characterized in that the gas atmosphere is bound by the vaporized gas-binding substance.

Claims (1)

2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Gasatmosphäre durch Erhitzung und Zersetzung einer Alkali-oder Erdalkalimetallverbindung, z. B. eines Nitrids oder eines Karbonats, herbeigeführt wird. 2. The method according to claim 1, characterized in that the gas atmosphere by heating and decomposition of an alkali or alkaline earth metal compound, for. B. a nitride or a carbonate is brought about. 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der zu verdampfende Fangstoff vor der Zerstäubung, vorteilhaft vor Anbringung in der Röhre, von okkludierten Gasen befreit wird. 3. The method according to claim 1 or 2, characterized in that the capture material to be evaporated is freed from occluded gases prior to atomization, advantageously prior to being placed in the tube. 4. Verfahren nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass zur Bindung von Gasresten Magnesium oder ein Erdalkalimetall, z. B. Barium, in dem eine geringe Menge eines Erdalkalimetall-oder Alkalimetallnitrids oder-karbonats zur Lösung gebracht ist, zerstäubt wird. 4. The method according to claim 1, 2 or 3, characterized in that to bind gas residues magnesium or an alkaline earth metal, for. B. barium, in which a small amount of an alkaline earth metal or alkali metal nitride or carbonate is dissolved, is atomized.
AT160360D 1937-03-09 Process for the manufacture of high vacuum discharge tubes. AT160360B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE160360T 1937-03-09

Publications (1)

Publication Number Publication Date
AT160360B true AT160360B (en) 1941-04-25

Family

ID=29413185

Family Applications (1)

Application Number Title Priority Date Filing Date
AT160360D AT160360B (en) 1937-03-09 Process for the manufacture of high vacuum discharge tubes.

Country Status (1)

Country Link
AT (1) AT160360B (en)

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